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This can be found on the side of your tank or mounting plate
Do not give serial number from the pump
Ingersoll Rand 54732417 OEM Pressure Switch and Motor Starter Combination for 230/1/60hz
54732417 from Ingersoll Rand is an all-in-one pressure switch and motor starter combo. This switch is pre-set from the factory to kick on when the pressure drops below 145psi and kick off when the pressure reaches 175 psi. The built in overload relay is adjustable from 20 to 30 amps and works on 230v single phase power. There are four threaded ports on the bottom of the switch as well as a separate connection line for the unloader.
54732417 is an OEM part from Ingersoll Rand.